parallel cut blasting

The technology problems of blasthole depth,cutting blasting,smooth wall blasting,and directional blasting is discussed.

文章对炮眼深度、掏槽爆破、光面爆破、定向爆破等技术问题进行了探讨。

This paper presents the method of optimizing cutting blasting plan of rock roadways by means of grey system theory, and applies it to choose cutting blasting methods for hard rock roadways and achieves better effect.

借助于灰色理论构建了优选岩巷掏槽爆破方案的方法,并将该方法应用于现场的坚硬岩石巷道爆破掏槽方式的选择中,取得了较好的效果。

Based on the theory as well as model test and engineering practice, some major techniques on cutting blasting and smooth blasting in rock tunnel are discussed .

结合岩石爆破破碎理论、模型试验和工程实践 ,对岩巷掘进中深孔光爆几个较为关键的技术问题 ,特别是掏槽爆破和光面爆破进行了较为细致地分析和研究 ,推荐了较为合理的掏槽形式和掏槽参数、光爆装药和光爆参数 ,提出了较为合理的起爆延迟间隔时

Research on cut blasting experiment of bottom air column charge and its mechanism;

底部空气柱装药掏槽爆破试验及机理研究

Application of cut blasting in trench digging technique in the middle of the stope;

掏槽爆破在采场中部掘沟工艺中的应用

The application of cut blasting in Ekou iron mine is described.

介绍了采场中部掏槽爆破在峨口铁矿的应用 ,提供了一组比较合理的爆破参数 ,供类似矿山的生产作参考。

The developments of cut blast theory and technology are expounded and the new method of cut blast with holes perpendicular to the work face in drift is put forward.

论述了掏槽爆破理论与技术的发展现状，提出平巷直眼掏槽爆破新方法。

The development and the present situation of the cut blast theory and technology are summa rized in this paper.

本文对构槽爆破理论和技术的发展现状进行综述，分析了掏槽爆破理论研究有待深入的若干问题。

The developments of cut blast theory and technology are expounded and the new method of cut blast with holes perpendicular to the work face in drift is put forward.

论述了掏槽爆破理论与技术的发展现状,提出平巷直眼掏槽爆破新方法。

The mechanic model of empty space's formation was established based on the typical bore distribution in parallel cut blasting with cavity.

建立了典型空孔直眼掏槽的力学模型,从理论上得出了影响空孔直眼掏槽效率的影响因子为岩石的抗拉强度、抗压强度、岩石初始密度、岩石中纵波的传播速度、炸药的性质、空孔半径、空孔到掏槽孔的距离、崩落孔与掏槽孔的起爆时差;选择了其中对工程有实际意义的4个参数进行27次正交试验。

The physical behavior of cut holes in the course of forming empty space was analyzed; and the mechanic model of empty space’s formation was established based on the typical borehole distribution in parallel cut blasting with cavity.

空孔直眼掏槽是隧道或井巷掘进的主要方法之一。

Application of burn cut to tunnel soft rock construction and blasting parameters optimization;

直眼掏槽在隧洞软岩施工中的应用及爆破参数优化

Through research on tunnel-based triangle burn cut by in-situ test,it is assumed in this paper that the process o f cavity formation by explosive contains two successive stages,rock being broken and being thrown out.

通过对三角柱直眼掏槽爆破进行试验研究 ,认为爆破槽腔的形成过程可分成两个阶段 ,即岩石破坏阶段和破碎岩石抛出阶段 ;进而 ,依照岩石压缩破坏与剪切破坏的力学准则 ,导出三角柱直眼掏槽炮眼间距与装药系数的计算式 ;根据计算结果 ,在井下巷道工程实际应用中进行对比 ,证实了它的可靠性。

Numerical Simulation Research of Charging Optimization in Spiral Cutting Blasting in Medium Deep Bore

中深孔掏槽爆破装药优化的数值模拟研究

Application of cut blasting in trench digging technique in the middle of the stope

掏槽爆破在采场中部掘沟工艺中的应用

Research on Size Effect of Empty Hole in Horizontal Roadway Cut Blasting & Accumulating Characteristic of Surrounding Rock Damage Caused by Frequently Blasting Vibration;

平巷掏槽爆破空孔尺寸效应及围岩频繁震动损伤累积特性研究

Study of Method of Conducting Smooth Blasting in Weak and Soft Surrounding Rocks

软弱围岩中光面爆破掏槽孔方案研究

The Norwegian cut can provide more dependable advance per round than the plough cut.

挪威掏槽与楔形掏槽相比，可以提供更可靠的每次爆破的进度。

The kibble hole arrangement optimization of tunnel digging blasting of Daanshan mine

大安山矿巷道掘进爆破掏槽孔布孔优化

Discussion About Blasting Footage and Cutting Patterns of Circular Tunnel in Supper Hard Rock

圆型隧洞超硬岩爆破进尺与掏槽方式探讨

Popularization and Application of Deep-hole Blasting Technique in Bottom Compound-term Wedge Cutting

底部复式楔形掏槽中深孔爆破技术的推广应用

Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation

双楔形掏槽方法和光面爆破技术的综合设计

The loosening holes outside the plough cut are also drilled at an angle which improves the breakage possibility.

在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。

A TEST AND RESEARCH ON UNLOADING BY BLASTING IN COAL SEAM 2 IN MEN TOU GOU COLLIERY

门头沟煤矿二槽煤爆破卸截试验研究

DESIGN AND CONSTRUCTION OF A LARGE IRRIGATION AQUEDUCT BRIDGE′S BLASTING DEMOLITION

一大型水利渡槽爆破拆除设计与施工

Dynamic Numerical Simulation for the Mechanism of V-shaped Notch Blasting

V形刻槽爆破机理动态数值模拟分析

DEMOLITION OF ALUMINA STORAGE BY DIRECTIONAL BLASTING IN COMPLICATED ENVIRONMENT

复杂环境下氧化铝储槽定向爆破拆除

Blast-cutting of the Gate Slot of Huangling Water Gate in Wuhan for Slot Widening and Monitoring of Blasting Vibration

武汉黄陵闸闸门槽扩宽爆破切割与爆破振动监控

ENGINEERING PRACTICE AND NUMERICAL SIMULATION ON THE MILLISECOND BLASTING FOR DITCHING DEEP BORE HOLES

沟槽深孔微差爆破的工程实践和数值模拟

Study on the Failed Mechanism and Experiment of Spiral Notch-holes Blasting;

螺旋切槽孔松动爆破力学机理及试验研究

Study on the Mechanism of Notched Directional Splitting Controlled Blasting by Dynamic Photoelastic Method;

切槽定向断裂控制爆破机理的动光弹研究